fix: renovate config link is broken (#721)

docs/learn/maintenance/upgrades/how-to-keep-everything-up-to-date.mdx

@@ -20,7 +20,7 @@ Use [Renovatebot](https://docs.renovatebot.com/) to automatically open Pull Requ
 
 First, install the `renovate.json` config file into your repo:
 
-[https://github.com/cloudposse/renovatebot-testing-2/blob/review-branch/.github/renovate.json](https://github.com/cloudposse/renovatebot-testing-2/blob/review-branch/.github/renovate.json)
+TODO
 
 Second, add `# renovate` annotations to your code as detailed below in the `Examples` section. Although annotations may not be necessary for some dependencies (our `renovate.json` file does try to identify common dependency patterns, even in the absence of an annotation), we do recommend that you annotate where possible.